CN219091105U - Evaporator for neon helium crude extraction - Google Patents

Abstract

The utility model discloses an evaporator for coarse extraction of neon and helium, which comprises a base, a tank cover and an evaporation tank body, wherein the base and the tank cover are respectively fixed at two ends of the evaporation tank body, a heat exchange spiral coil is arranged in the evaporation tank body, a lifting seat is arranged at the bottom end of the heat exchange spiral coil, a threaded hole is formed in the center of the surface of the lifting seat, and a lifting stud is connected in the threaded hole through threads; according to the utility model, the lifting seat is arranged in the evaporation tank body through the lifting stud, the threaded hole, the penetrating hole and the lifting stud, the spiral coil is arranged on the lifting seat, when maintenance is needed, the lifting stud is only required to be rotated, the lifting stud and the lifting seat are screwed, and the lifting seat is driven to lift, so that the spiral coil is driven to lift from the tank body, the limitation of lifting equipment is effectively avoided, the maintenance is inconvenient, and the maintenance flexibility is improved.

Description

Evaporator for neon helium crude extraction

Technical Field

The utility model belongs to the technical field of neon and helium crude extraction, and particularly relates to an evaporator for neon and helium crude extraction.

Background

With the rapid development of industrial production and scientific research industry, the production amount of rare gases is increasing year by year and is widely used in medicine, sophisticated science and technology, and daily life. Neon and helium are used as a member of rare gas, and in actual production, since neon, helium and other components belong to low boiling point components, they are concentrated in the nitrogen side of the main cold evaporator and the top of the lower tower in a non-condensable gas state, raw gas is taken out from the nitrogen side of the main cold evaporator and the top of the lower tower, respectively, and fed into a coarse neon and helium extraction device, and coarse neon and helium products are extracted.

When the existing main cold evaporators are in use, a DN40 noncondensable gas discharge pipe is respectively led to a neon helium tower at nitrogen side sealing heads of the two main cold evaporators, a DN80 pipeline is led from the top of the lower tower, 15500Nm3/h low-pressure nitrogen is pumped into the neon helium tower, a liquid nitrogen pipeline liquid drawing valve is gradually closed on the premise of ensuring stable flow of liquid nitrogen entering the upper tower and qualified normal-pressure nitrogen purity by optimizing operation of a rectifying tower, and the noncondensable gas at the nitrogen side of the main cold evaporators is completely fed into the neon helium tower to serve as raw material gas, so that the yield of neon helium is improved, but the following defects are caused:

(1) When the main cooling evaporator is used for the neon helium crude extraction operation, the spiral coil pipe used for heat exchange in the main cooling evaporator is required to be regularly maintained and overhauled in order to improve the extraction cooling efficiency, and when the main cooling evaporator is overhauled, the spiral coil pipe is positioned in the tank body and is required to be hoisted by hoisting equipment, so that the main cooling evaporator is limited by the hoisting equipment, and the problem of inconvenient overhauling and maintenance is caused.

Disclosure of Invention

The utility model aims to provide an evaporator for coarse extraction of neon and helium, which aims to solve the problems that when the main cold evaporator proposed in the background technology is overhauled and maintained, a hoisting device is required to be used for hoisting the main cold evaporator, and the overhauling and the maintenance are limited by hoisting, so that the overhauling and the maintenance are inconvenient.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an evaporator for neon helium crude extraction, includes base, cover and evaporation tank body, base and cover are fixed respectively at the both ends of evaporation tank body, the inside of evaporation tank body is provided with heat transfer spiral coil, heat transfer spiral coil's bottom is provided with the elevating socket, the screw hole has been seted up to the surface center department of elevating socket, there is the lift double-screw bolt inside through threaded connection, the bottom mounting of lift double-screw bolt has the foundation, the outer wall cover of foundation is equipped with the cover, the cover is fixed on the base at the bottom, a plurality of penetration holes have been seted up to the surface of elevating socket in circular array.

Preferably, a limiting side groove is formed in one side of the inner wall of the evaporation tank body, a limiting side block is arranged on the inner side of the limiting side groove, and the limiting side block is fixed on the side wall of the lifting seat.

Preferably, the surface of the lifting seat is provided with a guide hole, a supporting rod penetrates through the guide hole, and the supporting rod is fixed in the evaporation tank body.

Preferably, a handle is fixed at the top end of the lifting stud, and the longitudinal section of the handle is of a T-shaped structure.

Preferably, the longitudinal section of the bottom post is of a convex structure, and the cross sections of the bottom post and the bottom sleeve are of circular structures.

Preferably, the central axes of the bottom post, the bottom sleeve and the lifting stud are mutually overlapped, and the bottom sleeve and the base are fixed through welding.

Preferably, the side wall of the evaporating pot body is provided with a liquid nitrogen port, and the bottom end of the base is provided with a valve body.

Compared with the prior art, the utility model has the beneficial effects that:

(1) Through lifting seat, the screw hole, infiltration hole and the lift double-screw bolt of design, install lifting seat at the evaporation jar internally through the lift double-screw bolt, place the spiral coil on the lifting seat, when maintenance is needed, only need rotate lifting double-screw bolt, lifting double-screw bolt and lifting seat carry out the screw thread and close, drive lifting seat rises, thereby drive spiral coil and rise from jar internal, the effectual restriction of avoiding receiving lifting equipment is inconvenient to overhaul maintenance, improve maintenance flexibility, through the end cover of design and foundation, realize installing lifting double-screw bolt, through spacing side groove and spacing side piece card of design in spacing side groove, realize spacing to lifting seat lift adjustment, avoid its excessive and lead to the electrical components and parts of connection on spiral coil to appear pulling the damage, support pole and guide hole through the design, realize lifting seat lift support direction, prevent that it from appearing the skew slope and influencing the lift adjustment.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the assembly of the lifting seat, lifting stud and evaporation tank of the present utility model;

FIG. 3 is an enlarged view of the utility model at A in FIG. 2;

FIG. 4 is an assembled perspective view of the lifting seat, the limiting side block and the support rod of the present utility model;

in the figure: 1. a base; 2. a can lid; 3. an evaporation tank body; 4. limit side grooves; 5. a support rod; 6. lifting a stud; 7. a handle; 8. a threaded hole; 9. a bottom sleeve; 10. a bottom post; 11. limiting side blocks; 12. a lifting seat; 13. a penetration hole; 14. and (5) a guide hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

Referring to fig. 1 to 4, the present utility model provides a technical solution: the utility model provides an evaporator for neon helium crude extraction, including base 1, tank cover 2 and evaporation tank body 3, base 1 and tank cover 2 are fixed respectively at the both ends of evaporation tank body 3, the inside of evaporation tank body 3 is provided with heat transfer helical coil, evaporation tank body 3's lateral wall is provided with the liquid nitrogen mouth, base 1's bottom is provided with the valve body, heat transfer helical coil's bottom is provided with lifting seat 12, lifting seat 12's surface center department has offered threaded hole 8, threaded hole 8's inside has lifting stud 6 through threaded connection, through lifting seat 12 of design, threaded hole 8, infiltration hole 13 and lifting stud 6, install lifting seat 12 through lifting stud 6 in evaporation tank body 3, place helical coil on lifting seat 12, when maintenance need be overhauld, only need rotate lifting stud 6, lifting stud 6 and lifting seat 12 carry out the screw and close, thereby drive lifting seat 12 rises from the internal lift of jar, the effectual restriction of avoiding receiving equipment is inconvenient for maintaining, lifting stud 10 is fixed to the bottom end of lifting stud 6, the outer wall cover of lifting stud 10 is equipped with bottom cover 9 through design bottom cover 9 and lifting stud 9, lifting stud 9 is fixed to the bottom cover on lifting stud 1, realize that lifting stud is circular array is fixed to lifting stud 13.

In this embodiment, preferably, limit side groove 4 has been seted up to inner wall one side of evaporation tank 3, limit side groove 4's inboard is provided with limit side piece 11, limit side groove 4 and limit side piece 11 through the design, limit side piece 11 card is in limit side groove 4, realize going up and down to lift seat 12 and adjust spacingly, avoid its excessive and lead to the electrical components and parts that connect on helical coil to appear dragging the damage, limit side piece 11 is fixed on the lateral wall of lift seat 12, guide hole 14 has been seted up on the surface of lift seat 12, the inside of guide hole 14 runs through has support rod 5, through support rod 5 and guide hole 14 of design, realize going up and down to lift seat 12 and support the direction, prevent that it from appearing the skew slope and influence lift adjustment, support rod 5 is fixed in the inside of evaporation tank 3.

In this embodiment, preferably, the top end of the lifting stud 6 is fixed with a handle 7, through the designed handle 7, the lifting stud 6 is convenient to rotate and apply an acting force, the longitudinal section of the handle 7 is of a T-shaped structure, the longitudinal section of the bottom post 10 is of a convex structure, the cross sections of the bottom post 10 and the bottom sleeve 9 are of circular structures, the central axes of the bottom post 10, the bottom sleeve 9 and the lifting stud 6 are mutually overlapped, and the bottom sleeve 9 and the base 1 are fixed by welding.

Introducing a non-condensable gas discharge pipe of DN40 to the neon helium column at the nitrogen side seal heads of the two main cold evaporators respectively, wherein the arrangement of the neon helium column is about 15 meters higher than that of the main cold evaporators, the operation pressure of the neon helium column is 20Kpa lower than that of the nitrogen side of the main cold evaporators, so that the raw material gas extracted from the nitrogen side of the main cold evaporators is ensured to be free of liquid, a regulating valve HV2910A/B is arranged on a pipeline, a DN80 pipeline is introduced from the top of the lower tower, 2000Nm3/h of low-pressure nitrogen gas is extracted to enter the neon helium column as another raw material gas, and the non-condensable gas pipeline at the nitrogen side seal heads of the original two main cold evaporators is introduced to a hand valve V2911A/B of a pipeline behind an upper tower throttle valve HV 2003;

the operation of the original device is mainly to stabilize the rectifying working condition of the rectifying tower preferentially, ensure the stable rectifying working condition, ensure that the output of oxygen and nitrogen products reaches the standard, optimize the operation process to achieve the aim of improving the output of neon and helium on the premise of ensuring the stable working condition of the rectifying tower, firstly, under the condition of ensuring the qualified purity of low-pressure nitrogen of the lower tower, gradually opening a liquid nitrogen throttle valve HV2003, manually closing V2911A/B on site after the flow of liquid nitrogen to the upper tower is increased, observing the resistance of the neon and helium tower and the change of the purity of the neon and helium products at the moment, and the rising resistance indicates that the raw material gas entering the neon and helium tower is increased, and the purity of neon and helium is increased at the moment, to open the large neon helium product gas extraction valve PV2951 in time, prevent excessive non-condensable gas in the neon helium condenser, gather and block a channel, influence the work of the neon helium tower, gradually close until the liquid nitrogen pipeline liquid drawing valve V2911A/B is completely closed under the premise of ensuring the stable flow rate of liquid nitrogen entering the upper tower, fully send the non-condensable gas at the nitrogen side of the main cold evaporator into the neon helium tower, increase the pressure of the neon helium tower, timely increase the load of the neon helium condenser, stabilize the operation pressure of the neon helium tower, gradually open the large neon helium product gas extraction valve PV2951 under the condition that the purity of the neon helium product gas is qualified, improve the product gas yield, and the yield reaches 15Nm3/h.

The working principle and the using flow of the utility model are as follows: according to the utility model, the lifting seat 12 is arranged in the evaporation tank body 3 through the lifting stud 6, the spiral coil is arranged on the lifting seat 12, when overhauling and maintenance are needed, only the lifting stud 6 is required to be rotated, the lifting stud 6 and the lifting seat 12 are screwed, the lifting seat 12 is driven to lift, so that the spiral coil is driven to lift from the tank body, the situation that the lifting is limited by lifting equipment and inconvenient overhauling and maintenance are avoided, the overhauling and maintenance flexibility is improved, in lifting adjustment, the limiting side block 11 is clamped in the limiting side groove 4, lifting adjustment limiting on the lifting seat 12 is realized, and the situation that the electric components connected to the spiral coil are damaged due to excessive lifting is avoided.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides an evaporator for neon helium crude extraction, includes base (1), cover (2) and evaporation jar body (3), base (1) and cover (2) are fixed respectively at the both ends of evaporation jar body (3), the inside of evaporation jar body (3) is provided with heat transfer spiral coil, its characterized in that: the bottom of heat transfer spiral coil is provided with lifting seat (12), screw hole (8) have been seted up to lifting seat (12) surface center department, there is lift double-screw bolt (6) inside screw thread hole (8), the bottom mounting of lift double-screw bolt (6) has foundation (10), the outer wall cover of foundation (10) has set bottom cover (9), set bottom (9) are fixed on base (1), a plurality of infiltration holes (13) have been seted up to lifting seat (12) surface in circular array.

2. The evaporator for neon-helium crude extraction of claim 1, wherein: limiting side grooves (4) are formed in one side of the inner wall of the evaporation tank body (3), limiting side blocks (11) are arranged on the inner sides of the limiting side grooves (4), and the limiting side blocks (11) are fixed on the side walls of the lifting seat (12).

3. The evaporator for neon-helium crude extraction of claim 2, wherein: guide holes (14) are formed in the surface of the lifting seat (12), supporting rods (5) penetrate through the guide holes (14), and the supporting rods (5) are fixed inside the evaporation tank body (3).

4. The evaporator for neon-helium crude extraction of claim 1, wherein: a handle (7) is fixed at the top end of the lifting stud (6), and the longitudinal section of the handle (7) is of a T-shaped structure.

5. The evaporator for neon-helium crude extraction of claim 1, wherein: the longitudinal section of the bottom post (10) is of a convex structure, and the cross sections of the bottom post (10) and the bottom sleeve (9) are of circular structures.

6. The evaporator for neon and helium crude extraction of claim 5, wherein: the central axes of the bottom post (10), the bottom sleeve (9) and the lifting stud (6) are mutually overlapped, and the bottom sleeve (9) and the base (1) are fixed through welding.

7. The evaporator for neon-helium crude extraction of claim 1, wherein: the side wall of the evaporating pot body (3) is provided with a liquid nitrogen port, and the bottom end of the base (1) is provided with a valve body.

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